~where at #10 there is an excellent description of the different dagger stytles...which I have pleasure in recording again here ...by Derek in 2005.viz;

Quote" Daggers possess a variety of names depending upon the material forming the hilt and the shape of the blade. Those with handles of rocks such as crystal (J.F. Pieris 1938) or green marble are "Gal Mita Pihiya", the delicate narrow blades are "Ul Pihiya", the curved ones are the "Vak Pihiya" , and the chopper form is the "Pihiya Kattha" The hilt is either straight with the pommel twisted downward towards the edge, or downward and then upward towards the reverse of the blade."Unquote.